Jessica Simpson's Wedding Dress: Strapless Carolina Herrera

“The whole dress is embroidered in gold and feels very regal,” Herrera told People. Carolina worked on the design concept with Jessica to ensure it showed off her stunning 70-pound weight loss.

Simpson’s romantic wedding dress had multi-layer tulle and made her look like a princess, said sources. Simpson completed the look with a cathedral-length veil, Brian Atwood shoes and Neil Lane jewelry.

Simpson, who’s divorced from singer Nick Lachey, was supposed to wed Johnson last summer, but unexpectedly got pregnant with her second child, whom she gave birth to in June 2013. Since then, Jessica dieted and worked out rigorously and lost 70 pounds.

Simpson said fitting into her form-fitting wedding dress was her weight-loss motivation. Her wedding weight loss plan involved walking a minimum of six miles a day, yoga, and working out at the gym for 45 minutes, four days a week, with trainer Harley Pasternak, creator of the 5-Factor Workout DVD.

Pasternak, author of The Body Reset Diet, also trains Halle Berry, Megan Fox and Lady Gaga. Jessica’s low-carb diet featured high-quality proteins like salmon and chicken, fresh vegetables, and lots of salads. She also avoided processed foods and limited sugar.

‘My Weight Struggles Made Me Rich’

Jessica, who gained about 70 pounds during both her pregnancies, previously confessed her weight gain made her depressed. “I was so insecure; I couldn’t even believe what I weighed,” she said. “It is a really hard thing to go through.”

Ironically, Jessica said her weight problems are part of the reason she’s so successful with her clothing line, which boasts annual sales of $1 billion. Simpson said women relate to her because she’s not naturally skinny and has weight issues, just like many of them do.

“I have been every size on the planet and I understand women,” she told Forbes. “I definitely go up and down with my weight, and I’m really honest about it. If I’m five pounds heavier, if I’m 50 pounds heavier, or five pounds lighter, I just don’t think it should define who you are.”

Simpson said she is glad she never caved in to the extreme pressure to resort to starvation diets or other unhealthy measures. “I was proud of myself throughout that period for not doing every crash diet and trying to get as skinny as I could, or not eating,” she said.